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2. Optical disc drive - Wikipedia

   en.wikipedia.org/wiki/Optical_disc_drive

   Optical drives for computers come in two main form factors: half-height (also known as desktop drive) and slim type (used in laptop computers and compact desktop computers). They exist as both internal and external variants. Half-height optical drives are around 4 centimetres tall, while slim type optical drives are around 1 cm tall.

3. Optical disc - Wikipedia

   en.wikipedia.org/wiki/Optical_disc

   Optical discs. An optical disc is a flat, usually [note 1] disc-shaped object that stores information in the form of physical variations on its surface that can be read with the aid of a beam of light. Optical discs can be reflective, where the light source and detector are on the same side of the disc, or transmissive, where light shines ...

4. Optical storage - Wikipedia

   en.wikipedia.org/wiki/Optical_storage

   An optical disc drive is a device in a computer that can read CD-ROMs or other optical discs, such as DVDs and Blu-ray discs. Optical storage differs from other data storage techniques that make use of other technologies such as magnetism, such as floppy disks and hard disks, or semiconductors, such as flash memory.

5. List of computer hardware manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_computer_hardware...

   Broadcom Inc. (ARM-based, e.g. for Raspberry Pi) Fujitsu (its ARM-based CPU used in top supercomputer, still also sells its SPARC-based servers) Hitachi (its own designs and ARM) Hygon Information Technology (x86-based) Loongson (MIPS-based) HiSilicon (acquired by Huawei), stopped making its ARM-based design.

6. List of optical disc manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_optical_disc...

   Pandisk Technologies [20] Philips. Plasmon Data Systems (Defunct in late 1990's) [21] Prodisc. Pressing-Media www.pressing-media.com. PrimeDisc [22] Princo Corp [23] (seems to have stopped, as of 2020 they no longer appear on their home page) [24] Panasonic (Matsushita) (made DVD-RAM, stopped due to shrinking demand; made Blu-ray discs for ...

7. Optical storage media writing and reading speed - Wikipedia

   en.wikipedia.org/wiki/Optical_storage_media...

   CD drives and many early DVD drives stored data with constant linear velocity, so that the data rate remained the same regardless of the position of the optical head. Modern DVD drives use constant angular velocity to allow transferring data at the highest supported physical rotation speed and/or random access without needing to adjust the ...